Lock.



A. VOIGT.

'LOGK.

APPLICATION FILED NOV. 5, 1910.

1. ,OOl 1 ()0, I Patented Aug. 22, 1911.

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coLuMMA PLANOGRAPH C0,.WASIHNGTON. n. c.

ALBERT VOIGrT, OFjNEW YORK, N. Y.

LOCK.

Specification of Letters Patent. Patented Aug. 22, 1911.

Application filed November 5, 1910. Serial No. 590,798.

To all whom "it may concern:

Be it known that I, ALBERT VoIG'r, of the borough of Brooklyn, city and State of New York, have invented a certain new and useful Improvement in Locks, of which the following is a specification.

This invention relates to a simple lock construction embodying as a feature an angularly shiftable springactuated catch. With this catch there is combined means for readily locking the catch in its thrown position by a predetermined key while the construction devised permits the lock to be used either upon a swinging or a sliding door.

In the drawing accompanying the present specification, Figure 1 is an elevation of a lock embodying the features of my improvement, parts being broken away and the View being such as to show the mortise plate in full width. Fig. 2 is a side elevation looking from the left in Fig. 1, part being broken away. Fig. 3 is an elevation looking from the right in Fig. 1, the casing cover plate being removed. Fig. 4 is a detail perspective, various lock features being removed from their assembled positions. Fig. 5 is a longitudinal section through the key cylinder, the key being in place. Figs. 6, 7 and 8 are sections illustrating various ward combinations. Fig. 9 is a section illustrating the application of the improved lock to a swinging door. Fig. 10 is an elevation, partly in section illustrating the application of the invention to a sliding door.

Similar characters of reference designate corresponding parts in all figures.

The present lock embraces a spring-actuated catch mounted for angular movement. As here constructed, this feature comprises a bevel-faced catch proper 2 having a stem 3 through which passes a swivel pin 1 entering an opening 5 in the bottom plate 6 of the lock casing 6 and an opening 5 in the cover plate 6 of the casing. The catch proper is adapted to protrude through opening 7 in the mortise plate 7 of the casing, the plate being provided with the usual openings 7 for screws. Cover plate 6 is here provided with slits 8 adapted to engage with lugs 8 on the casing rim.

Catch-actuating spring 9 rests atone end against the bottom of a recess 9 in the catch body and at the opposite end against a stop 10 rigidly engaged in a slot 10 in the casing rim, a spring-centering guide 10 extending from the stop.

The catch is Withdrawn from its locking position by means of a rotatable cylinder 11, preferably terminating at one end in a suitable finger piece 11 This cylinder passes through an opening 11 in casing plate 6 and has at the remaining end an annular stopshoulder 11 carrying a crank pin-12 pro jecting into a shoulder-forming recess 12 in the catch body.

Referring now to means for locking the catch against withdrawal as the result of turning the said cylinder, 13 designates a key block mounted and adapted to turn in cylinder 11, its longitudinal movement in one direction in the cylinder being limited by the inturned rim 13 of the latter. The slot for the flat key B is designated by 13 this latter alining with notches 13 13 in mm 13 to permit the insertion and withdrawal of the key in the locked and the unlocked condition of the catch. The block is reduced in diameter at one end, see 14, to expose the edge of the inserted key and is provided with key-steadying wings 1 1 141: at the sides of the key slot.

A ward 15 projects from a lever 15 here conveniently mounted upon the swivel pin 4: in a slot 15 in the stem 3 of the catch and pressed by a spring 15 toward the key block. ward levers, as well as their relation to washers 16 on pin 4: may be variously changed in order that a key with a particular number and arrangement of ward notches shall be necessary to operate any given lock. Thus, in Fig. 6 two such levers and three washers are indicated, in Fig. 7, three wards and two washers, while in Fig. 8 a still difi erent combination is represented. The key block may have a shoulderforming projection 17 adapted to strike against the wards and limit the turning movement of the block.

A locking eccentric 18 fits over the reduced portion of the key block, it being keyed thereto by the aforesaid wings 14 14: which enter notches 19, 19 in the eccentric. When the block is in the unlocked condition, the catch is free to be withdrawn but when the block is turned to the locked position, the eccentric impinges against 3 of the catch and holds the latter against withdrawal.

The catch plate is designated 20.

By reason of the fact that the catch proper is beveled, the catch impinging The number of these wards and.

against the striking edge of the catch plate 7 is readily forced in, simultaneously turning about its axis against the resistance of its spring 9, and snaps into the catch opening thus adapting the device for use witha swinging door. Furthermore, the same result of overcoming the spring tension arises when the lock is applied to a sliding door and since the catch proper is undercut, see

'a positioning dowel 21 adapted to enter a corresponding opening 22 in the catch plate and aline the locked parts.

Having described my invention, I claim 1. In a lock, the combination of a casing, a swiveled spring-pressed catch, a cylinder having a crank pin connection with said catch, a key block mounted in said cylinder concentrically therewith, and a locking piece carried by said block and adapted to cooperate with said catch.

2. In a lock, the combination of a casing, a swivel pin in the casing, a spring-pressed catch mounted on the pin, a cylinder mounted in the casing and having a crank pin connection with said catch, a key block mounted in said cylinder, spring pressed ward levers, and a locking eccentric secured to said key block.

3. A'lock embodying in combination, a casing, a swiveled spring-pressed catch having a beveled and undercut face as described, a swivel pin in the casing to which said catch is swiveled, a cylinder mounted in said casing and having a crank pin connection with said. catch, a key block mounted in said cylinder, spring pressed ward levers, a locking eccentric secured to said keyblock, and means for securing a centering pin to said casing.

4. A look embodying in combination, a casing, a swiveled spring-pressed catch having a beveled and undercut face as described, a swivel pin in the casing to which said catch is swiveled, a cylinder mounted in said casing and having a crank pin connection with said catch, a key block mounted in said cylinder concentrically therewith,

said cylinder being provided with a finger piece and a stop shoulder at one end and an inturned rim at the other end overlying said block, spring pressed ward levers mounted on said swivel pin,-a locking ec centric secured to said key block, and means for securing a centering pin to said casing.

In testimony whereof, I have hereunto signed my name in the presence of two subscribing witnesses.

ALBERT VOIGT.

WVitnesses FRANCESCO GATALANOTTO, FRIEDERIOH EHRENTREIOH.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

Washington, D. C. 

